265 
THE HEAMME MACHINE; OE, THE NEW ELECTEIC 
LIHHT ON THE CLOCK TOWEE, WESTMINSTEE. 
By M. F. O’REILLY, B.C.S. 
[PLATE Cl.] 
This is a magneto-electric machine, invented by M. Grramme, 
of Paris. It was first submitted to the Academy of Sciences in 
July 1871, when it elicited warm commendation from several 
members of that learned body. The novelty of its leading features 
is such as to excite the interest of the scientific enquirer, while 
its practical bearings strongly urge it on the notice of certain 
classes of specialists. 
It has been introduced into this countiy by M. Werdermann, 
an eminent chemist, and has been exhibited for several 
weeks to various parties in the Engineering Works of Messrs. 
Whieldon and Cooke, Westminster Bridge Eoad. Public at- 
tention seems to be awakening to the advantages derivable 
from it, and no doubt further enquiry will be made into its 
characteristic merits, when, if it answer the expectations aK 
ready entertained by many, it must play an important role in 
the development of the practical applications of electricity, and 
may indeed eventually supersede the machines actually in use. 
We intend in this paper to give as full an account of this new 
apparatus as the limits which have been prescribed to us will 
permit. 
It is only about forty years since the principle of induction 
was discovered by that indefatigable researcher, Faraday; and 
the progress made in this new branch of electricity during the 
four decades in question, is quite astonishing. There is scarcely 
a parallel for it in the history of science. Nor has there been, 
a halt in the onward movement ; every year has brought its 
contribution — sometimes in the shape of a new application, 
occasionally in the extension of a principle, but generally in 
the introduction of more or less valuable improvements. Fara- 
day’s discovery threw open a very extensive region for explora- 
tion ; and one too which promised to be amply remunerative. 
